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Finding the Fourth Proportional to 545,657.80, 817,104.30 and 435,065.80

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Solution

The fourth proportional to 545,657.80, 817,104.30 and 435,065.80 is: 651,496.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,657.80 : 817,104.30 = 435,065.80 : x
  2. Step 2: Convert to fraction form
    545,657.80/817,104.30 = 435,065.80/x
  3. Step 3: Cross multiply
    545,657.80x = 817,104.30 × 435,065.80
  4. Step 4: Simplify right side
    545,657.80x = 355,494,135,962.94
  5. Step 5: Solve for x
    x = 355,494,135,962.94/545,657.80
  6. Step 6: Final answer
    x = 651,496.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.